What about selling both and getting a Vista? Now I understand why you think the BJCE is huge if you are in the city. With a Vista you can probably navigate indoor spaces better and have a smoother ride without the large footprint of an AT stroller. I actually use my Mac Triumph when I go somewhere indoors. Yes, it's a bumpy ride outdoors but it's the only stroller that fits easily in restaurants and narrow stores near us. For all outdoor activities, we use the Valco Trimode and the Baby Jogger City Classic Double. Maybe it's different here, but tons of people have large AT strollers in Chicago. We need those given our snowy long winters.
You can also look at the Micralite Toro, the Valco Latitude and Mountain Buggy Swift.